ORGANIC PETROLOGIC CHARACTERISTICS AND ASSESSMENT OF COAL AND TERKESTRIAL ORGANIC MATTER OIL SOURCE ROCK

Coal.terrestrial organic-rich source rock as well as marine and lacustrine saproelic source rock are three types of source rocks in geologic bodies, which are characterized by organic matters in source rock significantly dominated by higher plants,being mainly type Ⅲ kerosen. and composed of oilprone hydrogen-rich macerals(vitrinite ,sapropelic maceral and super-micro liptinite) which control the oil potential and hydrogen-poor materials with no oil potential.Considering the complicated composition and structure of coal and terrestrial organic-rich source rocks,progressive(material. submaceral and supormaceral in turn)studies must be undertaken using fluorescent microscope analysis technique first,combined with reflection and transmission electronic microscope analysis technique,to obtain an accu-rate evaluation of the source rock.Hydrogen-rich components of Jurassic coaly source rocks in Xinjiang are significant-ly dominated by vitrinite(certain amounts of super-microliptinite exist)and liptinite is comparatively abundant in dull shale. Therefore its oil potential cannot be neglected.